When I comment is some question or answer in this including all SE sites I noticed that it shows suggestion if I start with @.

But, it is boring to me to use mouse to select the commenter's name.

Is there any short key to insert the name?


You can use the TAB key to switch between possible suggestions which should auto-complete the full @-mention.

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For more details on @-replies, see How do comment @replies work?


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